Wood-boring machine.



' PATENTBD MAR. 13, 1906. H, BIBLE & L. A. ROBINSON.

WOOD BORING MACHINE.

APPLIOATION FILED AUGu-lfi. 1905.

. NITED STATES PATENT omen j c isiiiriii item; A. RoBiNsoN, orSHERMANQTEXAS;

f spificatioa of Letters Pamela. Applitatiofi iileflliigiisit lZ, 905.serial to. 275,964.

woob' sonllie-MAoHmE Patented March 13, 1906.

a a o. I aws UNLEY Bimmnd LEE A. Rosmso'n, citizens of'th'e UnitedStates residing at Sherman, in the county of qli b flfid te L9 1 T a ilate i m certain new and useful I rovements in Wood-Boring Machines, ofwhich the fo'llow m ppara 6 v1n s awe 7:0 s uct'url m T si by wa pi aportion of the wood l de meo .e N "Am e fil m 'rq b i att by h inventionand readily unde'rstood from the following spcifie upn and; accoin"anying fe ina i bln d.a a; p h r' is the productionof a simple, andineipensiveborof aptab 'ity, iufi liimindig eral flaciemy tive in amen,insurels'free delivery of the borings from the'bore hole', and rendersit prac-T ticable o 9 1 hole 'ij it ein l g h and size incolumn's, beam,or like structuralmembers..

To these ends thapres'e nt' i vention @011 jt f injthe combination andarrangement of paift as mitts at ng- 913 mere fullydese b s owni ih i bi p my ig' rewi gs '.andlpa i ldr y'nbin dm t nfle ,ip b' d slam iibecngiunde t d-th t changes'i form, proportion, size, and minor detailsmay b ma e ,Wi il Q I 566% f t e} @PP l claims virithout dep v, g" thespirit or sacrificing any of the advantages'of the invenlnthe'drawingdFig-ure 1 is a side elevation of our improved Wood-boringmachine shown with the center portion of the spindle, frame,

- car, and other parts broken away. Fig. 2

represents a top plan view of the same, Fig. 3 1s a vertical transverseView on the line X X, Fig. 2. Fig. 4.- is an enlarged view inperspective of the boring-head employed and manner of attaching sametoboring-tube, and Fig. 5 is an enlarged view of the device employed foropening and closing the clamps that hold, the piece to-be bored.

The framework of our improved wood-b-or ing machine consists of thehorizontally-dis posed sills A, which rest firmly upon a suit ablefoundation. They are joined together at their front ends by the bracketB and other- .odyingles'sential ,fatfirs wisesecured by suitable the topside of these sills'are firmly. bolted the tracks C and C, upon whichtravels a timber carrying car D, that comprises a bed composed ofhorizontally dispos'ed timbers secured parallel to each other by thetransversely dis posed bases of head-blocks E, attached by metal wh els;land r',, sh;ewhe1s I" being g grooved to the inverted ,V, formed eatrally onthe topside-of trackC and by which theicar is retained onthetrack The car thuscons tructe'dl is about oneii lf the length of sillsA,;admitting of the car traveling forward' b-5&1; about as; length.

1Th'e'he'ad-blbcks consist f a bed" orbase n ,in-

ternally grooved their entire length, as at J,

into each ofwhi'ch are-slidably fitted two clamps K, that arenotched,als shown" at K, enabling them to securely but remoyably holdeither round or square timber inposition while being bored; Each of; theclamps is provided on the bottom side, near its, outer endwith adownwardly-projecting lugL, that carries a pinag' V Passing through eachhead'- bolts F adjacent their ends, The bed thus formed rests uponaXlesG,ithattu rn inboXeS H, and at the end of each axle are securedblock and extending from one to the other isla shaft b,' on which arerigidlyniounted sleeveslM,"th'at extend the inn'eif sji'dfe walllof thebase of each head-block and carry disksN,provid'ed at opposite sidesandne r p ph ry proje n pi q T each of these pins is pivoted a rodllthate'Xi tends from the pin 0 to pins/a. Sockets are formedon radial-arms Q,projecting from the ends of sleeves-M, in which are secured thehand-levers R. By forcing-these levers down'the clamps K are drawntogether against the piece of round or square timber to be bored, and byforcing them upward the longitudinally thereof for the passage or thecore not removed by the cutting-head, and it is rotatably mounted in ahorizontal position on'the bed or sills A and is driven by means of adrive-pulley W, which is fixedly mounted at the end of same androtatably supported at this end in bearing X, arranged on the bracket B.To the forward end of spindle V is secured a collar Y, preferably in twohalves. The outer diameter of this collar fits the inner guide-ring c,that is held adjustably in position by screws 61 passing through thesides of outer ring 6, which is provided with a bracket f, extendingdownward and secured centrally to the base of head-block E. The car D,carrying the piece of timber to be bored, is advanced by means of ahorizontal screw g, that is journaled at one end in the bracket B, theother end being fitted to a nut h and secured centrally tothe lower sideof head-block base E. Near the end of screw adjacent to the bracket Bare secured pulleys & of different diameter, over one of which a belt jpasses and thence upward and over a corresponding pulley k, secured tothe spindle V, by which as the spindle revolves the screw is driven andthe car drawn slowly forward.

The boring mechanism, as before stated,

comprises a tubular shank or spindle V, its

inner diameter governing the size of core that will be left, suitablespiral ribbons or threads mwrapped thereabout to form a double helicalthread along the shank, and a cutter-head comprising a collar Y in twohalves, removably attached to the forward end of the tube by screws n,each half of the said collar being provided witn a forwardly-projectinglip 0,

conforming in shape to the outer circumference of cutting-bits p andforming a support for same. The two cutting-bits are substantiallyU-shaped, formed with oppositely-disposed cuttinglips. The curved partsof these bits are of suitable width to cut an annular opening largeenough to receive the body of auger freely and to admit of the remainingcore passing looselywithin the body of auger, and they are secured tothe outside of tube by suitable screws 1".

To bore a hole longitudinally in the center of a column or the like, anoperation of the apparatus would occur substantially as IOllows: The caris first set in retracted position, and the column to be bored is thensuitably supported and clamped by the head-blocks concentric with theboring-spindle. Power is then applied to pulley W, so as to rotate theauger, which simultaneously turns the screw g, that advances the columnagainst the cutting-bits until a hole of any desired depth is formed,the chips being carried out by the spiral threads wrapped about the pipeand a core of wood loosely fitting the inside of pipe passing within it.

It will be noted that with our device we cut away only a small portionof wood generally required for producing a hole of large size,

but remove it in round straight lengths,

adapted for use as hand-rails and similar purposes.

Having thus described our invention,what we claim as new, and desire tosecure by Letters Patent of the United States of America, 1s-

1. In awood-boring machine, the combination with a hollow auger-spindle,of a cylindrical cutter-head secured on the end thereof, saidcutter-head consisting of two parts each provided with a projecting lip,U-shaped cutters secured to the spindle, said lips conforming to theouter circumference of the cutter.

2. In awood-boring machine, the combination with a hollow auger-spindle,a cylindrical cutter-head secured on the end thereof, said cutter-headconsisting of two parts each provided with a projecting lip, cutterssecured to the spindle, said lips conforming to the outer circumferenceof the cutters, of a car acting in conjunction with the cutter andcarrying adjustable clamping means, and a guiding-ring carried by thecar and adapted to embrace the cutter.

3. In a wood-boring machine, the combination with a car carryingclamping means and means for moving the car, of a hollow augerspindle, acylindrical cutter-head secured on the end thereof, said cutter-headconsisting of two parts each provided with a projecting lip, U-shapedcutters secured to the spindle, said lips conforming to the outercircumference of the cutter, and a guiding-ring mounted on the caradapted to embrace the cutter.

In testimony whereof we afliX our signatures in presence of twowitnesses.

HUNLEY BIBLE. LEE A. ROBINSON.

Witnesses:

J. P. GEREN, J. P. DEDERIOK.

